Segment Reporting (Details Textual) - Sales	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Product Sales Concentration Risk \| Mobile Connectivity
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	20.00%
Geographic Concentration Risk \| Non-US
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	54.00%	57.00%
Mini-VSAT Broadband Airtime Service \| Service Sales Concentration Risk \| Mobile Connectivity
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	48.00%	46.00%
FOG-based Guidance and Navigation Systems \| Product Sales Concentration Risk \| Intertial Navigation
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	16.00%	17.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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